[akamai] Fix the issue of populating tags and terminate the pipeline on agent failures

[brijesh-elastic]

Proposed commit message

akamai: Fix the issue of populating tags and terminate the pipeline on agent failures

The manifest variables `tags` and `processors` were never used in `cel.yml.hbs`. This update fixes
the logic for those variables and adds a terminate processor to handle agent failures.

This change will bump the `format_version` to 3.3.2

Checklist

• I have reviewed tips for building integrations and this pull request is aligned with them.
• I have verified that all data streams collect metrics or logs.
• I have added an entry to my package's changelog.yml file.
• I have verified that Kibana version constraints are current according to guidelines.
• I have verified that any added dashboard complies with Kibana's Dashboard good practices

How to test this PR locally

• Clone integrations repo.
• Install elastic package locally.
• Start elastic stack using elastic-package.
• Move to integrations/packages/akamai directory.
• Run the following command to run tests.

elastic-package test

Related issues

• Closes akamai.siem: Missing terminate processor and unused manifest tags variable #16117

[elasticmachine]

Pinging @elastic/security-service-integrations (Team:Security-Service Integrations)

[elastic-vault-github-plugin-prod]

🚀 Benchmarks report

To see the full report comment with /test benchmark fullreport

[elasticmachine]

💚 Build Succeeded

• Buildkite Build
• Commit: 205869a

cc @brijesh-elastic

[elastic-vault-github-plugin-prod]

Package akamai - 3.0.2 containing this change is available at https://epr.elastic.co/package/akamai/3.0.2/